I have noticed that most people with ASD are really bad at following instructions. They rather want to do something in there own way. Sure they want help but the teacher or guide have to meet them were they are. Some do not bother to take private lessons in eg music just because they want to do thing their own way. Some do take private lessons and suceed but most people (like me) need to do things their own way and having the teacher accept that. Sure they will need a guide/teacher but only one who let them be who they really are (which sometimes never happpens). What do you think this is all about?
I understand that some people, perhaps yourself included (as implied in your post), may have difficulty in or not be willing to following instructions due to wanting to express themselves just as they are. I don't think not wanting to following instructions due to wanting to express onself is necessarily wrong, unless it is in a context where it is necessary (e.g. for health and safety reasons, or at work or school where the "instructions" are directly related to the job duties).
I think that for myself, sometimes I am not good at understanding instructions because either I find it difficult to understand and/or quickly process the instructions, or maybe sometimes don't really know how to follow a instruction but don't necessarily ask for clarification (which, not asking for clarification is really on me/my fault). My point is that if one doesn't follow instructions because one doesn't understand it, or because one doesn't know how to, that doesn't necessarily mean they don't want to follow instructions!
I think it has to be considered that some people with an ASD (including me sometimes) have difficulty in quickly processing and/or understanding verbal and/or written instructions, sometimes especially those with idiomatic language! Also, I think that even some of those who do not have a diagnosis of any sort can still find it difficult to understand instructions (language-based, visual, or other type of), though some people may find a certain type or format of instruction easier or harder to understand than other types of instructions!
However, some people with ASDs may be comfortable with routines or rituals, and that may interfere with following instructions that interfere with them? However, if that is the case, I can also imagine that it is possible that following certain instructions can also make some people with ASDs feel comfortable.
If the instructions are related to social interaction, perhaps the instructions themselves may be difficult to understand for some people with ASDs, or if it is a case in which the person with ASD can follow it but refuses to do so, perhaps it can be a case of the person with ASD not understanding why it is important. However, for myself I think I would find that clear instructions would make it easier to know what is expected of me and what exactly to do.